RTKL Associates

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RTKL was a global architecture, planning and design firm. The firm was founded in 1946 by Archibald C. Rogers and Francis T. Taliaferro in Rogers’ grandmother’s basement in Annapolis and grew to be one of the largest architectural firms in the world prior to its acquisition by Arcadis NV in 2007. In October 2015, RTKL was formally merged with another Arcadis subsidiary, Seattle-based Callison, to form CallisonRTKL headquartered in Baltimore.[1]

The firm's name, RTKL, originated from the initials of its initial members, Rogers, Taliaferro, Kostritsky, and Lamb.


20th century[edit]

The firm was founded by Archibald C. Rogers in his grandmother’s basement in Annapolis, Maryland.[2] Francis T. Taliaferro joined shortly afterwards.[3] In 1949, the pair hired Charles E. Lamb, whose design for the Anne Arundel County Girl Scouts Teepee Lodge gained the firm national attention by winning an award from the American Institute of Architects.[4]

Rogers and Taliaferro's reputation grew when, in 1954, internationally renowned architect Pietro Belluschi selected the firm as his associate architect for the design of the Church of the Redeemer in Baltimore.[5] The project received an AIA Award of Merit and, in 1986, a special 25-Year Award from the AIA's Baltimore Chapter. In 1956, Lamb was made a partner in the firm, which changed its name to Rogers, Taliaferro and Lamb.[4]

The addition of urban design specialist George Kostritsky in 1961 completed the foursome, and the “Rogers, Taliaferro, Kostritsky and Lamb” name was condensed to “RTKL”. In that same year RTKL was commissioned to design the public spaces for the Charles Center, which contributed to Baltimore’s urban renewal movement. Largely because of the success of this involvement, the firm was commissioned to develop downtown plans for Cincinnati, Ohio, Hartford, Connecticut, and Charlotte, North Carolina, among other U.S. cities. The firm continued to expand in the next decades, opening offices across the company and overseas. RTKL also grew through acquisitions.

21st century[edit]

In 2000, RTKL acquired Dallas-based FDS International, a health practice ranked among the top ten in the country.[6] Later RTKL bought the Miami-based Howard Snoweiss Design Group, a design company, with an eye towards expanding its business in Latin America and the Caribbean.[7]

In 2007, RTKL became a wholly owned subsidiary of Arcadis NV, an international company that delivers consulting, design, engineering, urban planning, architectural and project management services for infrastructure, environment and buildings.[8]

In August 2010, the firm purchased Beijing-based AHS International, a practice that specialized in healthcare and medical-facility architecture.[9]

In 2011, Building Design ranked RTKL’s retail sector first in the world, its planning services third, and its urban design services fifth.


Tokyo Bay Rehabilitation Hospital in Tokyo, Japan


  1. ^ Bhatt, Sanjay (20 October 2015). "Callison merges into another architecture firm, HQ shifts to Baltimore". The Seattle Times. Retrieved 8 April 2016.
  2. ^ Kelly, Jacques (2001-12-07). "Archibald Coleman Rogers, 84, founded RTKL architectural firm". The Baltimore Sun. Retrieved 2015-09-13.
  3. ^ a b c d Atkinson, Bill (29 August 2004). "Urban visions are RTKL's stock in trade". The Baltimore Sun. Retrieved 13 September 2015.
  4. ^ a b Gunts, Edward (7 July 2007). "RTKL has made mark on region's landscape". Retrieved 13 September 2015.
  5. ^ Clausen, Merideth L. (1994). Pietro Belluschi: Modern American Architect. Massachusetts Institute of Technology. ISBN 0-262-03220-1.
  6. ^ "RTKL buys FDS, forms health facilities group". Dallas Business Journal. 2000-01-16. Retrieved 2015-09-13.
  7. ^ Sentementes, Gus G. (6 October 2000). "RTKL Associates buys Miami design company". The Baltimore Sun. Retrieved 14 September 2015.
  8. ^ Connolly, Allison; Arney, June (2007-07-07). "Design firm sold to Dutch company". The Baltimore Sun. Retrieved 2015-09-13.
  9. ^ Keegan, Edward (31 August 2010). "RTKL Acquires Beijing-Based AHS International". Architect. Retrieved 14 September 2015.
  10. ^ Heath, Thomas (19 June 1991). "'This Was a Product of the '80s'". The Washington Post. Retrieved 29 August 2015.
  11. ^ RTKL Portfolio Retrieved 28 October 2020

External links[edit]